Martha’s Vineyard Energy Storage Project

To enhance our ability to deliver energy for every moment of your life, Eversource is proposing to build cutting-edge energy storage technology in Oak Bluffs on Martha's Vineyard.

The proposed energy storage project will help reduce greenhouse gas emissions on the island by operating in place of aging diesel generators on the island.

The energy storage will replace the diesel generators operation during periods of high demand - providing a backup to supplement electricity supplied from the mainland by four undersea cables.

The new storage also promotes the construction of distributed solar generation on the Vineyard.

The project will utilize a state-of-the-art lithium-ion, 14.7-megawatt (MW) battery system, and related equipment to integrate the battery system with our electric distribution infrastructure.

Construction will be split into two phases, with 4.9 MW of storage completed in the first phase and the remaining 9.8 MW in the second phase.

The electric storage and other equipment will be housed in a two-story building on Eversource-owned land behind our area work center in Oak Bluffs. Some electric infrastructure and equipment will be outside the building, including roof-mounted solar panels.

The energy storage facility will be surrounded by a 10-foot, acoustically-treated sound wall that will be designed in consultation with Oak Bluffs public officials.